You can send automatic emails to your suppliers with your purchase order. In order to edit the content of this message, open your system setting and scroll down to the 'Suppliers' section. Click 'Purchase order email message'.
You will see a page with a subject line and a large box for your email content. Click 'Use tagging' to open a sidebar. Tags are used to personalise these emails. Start typing your message and click on the relevant tag when you want to enter data. Once you are happy with your email click 'Close tagging' and click 'Save'.